This study also collects information on nutrition education, breastfeeding promotion, and support provided to participants.

The study collected information on where the women were living at birth, age 15, and age 30.

They design and conduct customized studies to collect data, gauge opinion through surveys, evaluate programs, and more.

The study is collecting blood samples from all the women for future gene studies.

The study has collected data from mothers, fathers, children and teachers.

The study collected data from nationally representative samples of states, districts and teachers between school years 2002-03 and 2006-07.

"The study should have gone back more years and collected more data."

A more recent study conducted by Dionne and colleagues (2002) collected data from 940 subordinates.

Poehlman's longitudinal study on menopause collected the same measurements from each person twice over a six-year period.

The study collects detailed morbidity information only about illnesses requiring referral to hospital.